If S is the length of the crest, H is the height of water source of a weir whose length is L and discharge is Q m³/sec, the velocity of approach Vd is

If S is the length of the crest, H is the height of water source of a

1.	If S is the length of the crest, H is the height of water source of a weir whose length is L and discharge is Q m³/sec, the velocity of approach Vd is
A.	A
B.	B
C.	C
D.	D
Answer» D. D